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Transition between onion states and vortex states in exchange-coupled asymmetric ring dots
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10.1063/1.2164435
/content/aip/journal/jap/99/8/10.1063/1.2164435
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/8/10.1063/1.2164435
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) SEM image and (b) MOKE hysteresis loop of the asymmetric ring dots. A dotted arrow on the SEM image shows the direction of the exchange bias field. The inset shows the ring sizes.

Image of FIG. 2.
FIG. 2.

MFM images of the asymmetric ring dots under the external fields. Images (a)-(f) are observed in the sweep from to . Images (g)-(k) are observed in the sweep from . Directions of the magnetizations and the domain wall positions are shown as arrows and lines, respectively.

Image of FIG. 3.
FIG. 3.

Calculated hysteresis loop and magnetic configurations of the asymmetric ring dot with the same geometrical parameters as those of the experimental specimen. The circular static field of is applied in the circular clockwise direction, that is shown as an arrow.

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/content/aip/journal/jap/99/8/10.1063/1.2164435
2006-04-19
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Transition between onion states and vortex states in exchange-coupled Ni–Fe∕Mn–Ir asymmetric ring dots
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/8/10.1063/1.2164435
10.1063/1.2164435
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